Combined graphometer and plummet clinometer, 1663.
1663
Graphometer with magnetic compass
1710-1720
Graphometer, British, 1851-1900
1851-1900
Spirit level graphometer, German, 1870-1876
1870-1876
Graphometer-clinometer by Phillippe Danfrie
1597-1603
Graphometer, for surveying
Graphometer by Richer of Paris, late 19th century
1871-1900
Graphometer, Italian, 1691-1744
1691-1744
Azimuth variation, European 1601-1700
1601-1700
Graphometer, French, 1753
1753
Graphometer, Italian (?), 1701-1800
1701-1800
Graphometer, European, 1780-1820
1780-1820
Graphometer, French, 1780-1789
1780-1789
Graphometer, European, 1701-1775
1701-1800
Graphometer, Flemish, 1682
1682
Graphometer by engineer Robert Stephenson, British, 1819-1821
1819-1821